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Electronic Balance

Date:2022-07-19

Electronic Balance

An electronic scale is a type of weighing instrument.

Weighing instrument is a tool that uses Hooke's law or the lever balance principle of force to measure the mass of an object. According to the structural principle, it can be divided into three categories: mechanical scale, electronic scale, and electromechanical combined scale.

Electronic scales are mainly composed of three parts: load-bearing system (such as weighing pan, scale body), force transmission system (such as lever force transmission system, sensor) and indication system (such as dial, electronic display instrument).

Working Principle

When the object is placed on the weighing pan, pressure is applied to the sensor, which elastically deforms, so that the impedance changes, and at the same time, the excitation voltage changes, and a changing analog signal is output.

The signal is amplified by the amplifier circuit and output to the analog-to-digital converter. Convert it into a digital signal for easy processing and output it to the CPU for operation control.

The CPU outputs such results to the display according to keyboard commands and programs until such results are displayed.

Classification

1. According to the principle: electronic scale, mechanical scale, electromechanical combined scale

2. According to the function: counting scale, pricing scale, weighing scale, bluetooth scale

3. According to the purpose: industrial scales, commercial scales, special scales

4. Classification by placement location:

Desktop scales refer to electronic scales weighing less than 30kg

Platform scale refers to an electronic scale with a full weighing range of 30-300kg

Floor scale refers to an electronic scale with a full weight of more than 300kg

Precision balance

5. Classification by accuracy:

Class I: special balance precision ≥ 1/100,000 reference weighing instrument